Update: Four Verizon mvnos with byod went under in the course of one month.
Mingo Verizon transitioned to a Sprint platform and turned over their remaining Verizon users over to BMA Communications, a company running Lucky Wireless (another Vz mvno). Mingo Verizon became MyPayGo.

BMA decided to pull the plug on both MyPayGo and Lucky Wireless in September by not communicating with MywayWireless, a small company providing CS and tech support for both Lucky and MyPayGo.

Mywaywireless decided to end their relationship with BMA and Lucky wireless /Mypaygo customers ended up having to port out in an emergency move.

Air Voice Express/Cdma had announced their demise for December but they accelerated it to October.

So, three or four mvnos (depending on how you look at it) went down in one month or so. All with byod.

Mingo had excellent customer service. (Mingo Sprint is their direct successor).
Lucky had postpaid coverage and decent priced monthly plans.
Mypaygo was going to launch an unlimited talk plan.
Air Voice had good talk/text paygo rates.

With them gone , the short list of byod for Verizon prepaid options are:
1)Page Plus
2)H20 cdma.
3)Verizon prepaid.