Lids can be heavy if you have a bigger bank of nests. Top hinged lids are also more prone to letting in leaks in rain - so if you don't have good roof overhangs water can get in around hinges, around the lip of the lid, etc.Folks seem all to like dropdown nesting box doors over raised lids.... why please? (trolling for ideas to renovate our really decrepit and problematic inherited, old commercial coop).
(My nest boxes are top hinged but fully internal so that avoids the above mentioned leaking problem entirely.)