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Its a simple thing to understand. As the OP is asking about the effects of names on personality , we will have to assume that the names and their meaning have certain tendency of Tasaruf. It takes us to conclude

1. Either the names and their meaning have a self generating power of Tasaruf , which will become Shirk if one thinks so

2.Allah has put certain pre-destined tendencies in the names which effect a person . Thats correct to assume but had that been the case , it should have been explained in Quran and Hadith.

PS. The OP is obviously asking about the Islamic names so lets keep the issue of prohibited names away.

Is saddens me how quick you are in making judgement not knowing what is in ahadeeth. The way of our aslaf is when they do not know of something they say that we are not aware of this in ahadeeth. The do not say say that such and such is not in ahadeeth. Since should it be there, then one would have negated a hadeeth.

There is a difference in prohibited name and wrong names. Essentially there should be no prohibited name. Since once you say there is no effect of it, then whats in a name not to keep. But lets say that you regard those names which Rasulullah called despicable to be "prohibited", even so there are riwayat which mention of changing names simply because of their meanings..

The most famous being the grand father of Sa'eed ibn Musayyib r.a.

حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُوسَى حَدَّثَنَا هِشَامٌ أَنَّ ابْنَ جُرَيْجٍ أَخْبَرَهُمْ قَالَ أَخْبَرَنِي عَبْدُ الْحَمِيدِ بْنُ جُبَيْرِ بْنِ شَيْبَةَ قَالَ جَلَسْتُ إِلَى سَعِيدِ بْنِ الْمُسَيَّبِ فَحَدَّثَنِي أَنَّ جَدَّهُ حَزْنًا قَدِمَ عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ مَا اسْمُكَ قَالَ اسْمِي حَزْنٌ قَالَ بَلْ أَنْتَ سَهْلٌ قَالَ مَا أَنَا بِمُغَيِّرٍ اسْمًا سَمَّانِيهِ أَبِي قَالَ ابْنُ الْمُسَيَّبِ فَمَا زَالَتْ فِينَا الْحُزُونَةُ بَعْدُ
Its a Bukhari Hadeeth, so isnaad are not an issue. The last red part clearly indicates the the Huzunah remained in the progeny because of not changing the name Hazn. Do take note that should the name had been prohibited, there would have been no choice but to change it.

The other issue you erred is in saying there is no taking omen in name. Atleast you must have heard of Rasulullah himself taking omen from good names! When Suhail ibn Amr came on the treaty of Hudaibiyah What omen did Rasulullah take?

لَمَّا جَاءَ سُهَيْلُ بْنُ عَمْرٍو قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَقَدْ سَهُلَ لَكُمْ مِنْ أَمْرِكُمْ
The above is also from Bukhari Shareef.

1. Either the names and their meaning have a self generating power of Tasaruf , which will become Shirk if one thinks so In academia, unless someone makes that claim, it is stupid to think that the tasarruf is in the name bidhatihi. So to make that as a hujjah itself is incorrect in our discussion.

The matter of discussion is about ta'theer of names, and that issue is understood from the advices about names which Nabi has given over time.