Re-entry has two features:
1. Increases prize money.
2. Increases the probability of winning a professional.
The first is good, but the second is obvious that professional lose stack more likely to make re-entry than bad player. This will increase the percentage of the final tables, therefore, increase the number of tournaments that will benefit the good players.
If you have never had prefinal and final tables, I do not advise doing re-entry so as an advantage you will not, but only if you have a big bankroll you can. Stick to BRM always...